Reference letter update through webform necessary?

[yyjj]

hi guys I already got AOR but really anxious about my employment experience.
here's the case. My NOC code is 2225-Landscape designer and my employment experience includes 8 weeks of part-time and 46 weeks of full-time(total 54 weeks of employment history) within the same company.
I'm pretty sure that the 46weeks of full-time job duties match the duties given by NOC website. The problem is the 8 weeks of part-time experience that I'm a little worried about.
As illustrated in my reference letter for the 8 weeks part-time as a junior landscape designer:
- producing portfolio books for the company XXXX
- producing individual portfolio books for the projects including...

listed on the NOC web about 2225-Landscape designer, the most relevant one is

• Landscape designers and landscape architectural technicians and technologists survey and assess sites, prepare drawings, sketches and reports and perform other duties to assist landscape architects in designing landscaped environments.

As producing portfolio will include prepare drawings and sketches to assist landscape architects but the reference letter I submitted did not explain it in detail.


So question, should I get a new reference letter to explain my job duty more specifically and submit it through web form? And maybe add one or two more duties more relevant to 2225 to my reference(I left my work place already but my employer would happy to so as he forgot to add that before) I'm getting really anxious about this

Thanks for your time reading this!